File Size Converter (Bytes, KB, MB, GB, TB)
Convert storage sizes between Bytes, KB, MB, GB, and TB using decimal (1000) or binary (1024) standards.
Equivalent Storage Units
How to Use This Tool
Enter Value
Type the numeric size value.
Select Unit
Choose source unit (B, KB, MB, GB, TB, PB).
Choose Base
Select Decimal (1 KB = 1000 B) or Binary / IEC (1 KiB = 1024 B).
View All Units
See the converted values across all storage metrics simultaneously.
Key Features & Privacy Guarantee
- Supports Bytes (B), KB, MB, GB, TB, and PB
- Toggles between decimal SI standard (1000) and binary IEC standard (1024)
- Simultaneous multi-unit results table
- Instantly copy formatted sizes with one touch
Frequently Asked Questions
What is the difference between KB and KiB?
A Kilobyte (KB) in decimal is 1,000 bytes, while a Kibibyte (KiB) in binary IEC is 1,024 bytes (2^10). Operating systems often display KiB while labeling it KB.
Why does my 1TB hard drive show as 931GB on Windows?
Hard drive manufacturers sell drives in decimal (1 TB = 1,000,000,000,000 bytes), but Windows measures in binary (dividing by 1024^3), yielding ~931.32 GiB.
Is this tool free to use?
Yes, 100% free with unlimited conversions.
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